Sleep, Dreaming, and Virtual Reality for Mental Health

Overview

People spend approximately one-third of their lives asleep, yet sleep is often underused as an opportunity to support psychological well-being. Contemplative traditions, including Tibetan Dream Yoga, have developed practices that use waking imagination and lucid dreaming to explore perception, awareness, and habitual patterns of thinking. Recent advances in sleep monitoring, dream communication, and lucid dream induction now make it possible to study these practices using scientific methods. This study is a randomized controlled trial designed to examine the feasibility and effects of a Dream-Yoga-inspired intervention compared with an active control condition. The intervention combines waking and dreaming practices that are adapted for individuals without prior experience and delivered using virtual reality-based training and home sleep technology. The program is designed to be scalable and culturally neutral, without requiring prior knowledge of contemplative or religious traditions. The primary goals of the study are to characterize sleep and waking neurophysiology associated with Dream-Yoga-inspired practices and to evaluate whether participation is associated with changes in sleep-related brain activity and cognitive processes. Outcomes include measures of lucid dreaming, sleep physiology, and waking cognitive and perceptual processes. Anxiety will be assessed as an exploratory outcome to examine whether participation may be associated with changes in emotional experience. This study is not designed to provide treatment for anxiety or other clinical conditions. Results from this study will help inform the development of scalable sleep-based mental training approaches and guide future research on the use of dreaming and sleep practices to support psychological health and well-being

Dream Yoga is a contemplative practice with a documented history spanning more than a millennium, described in traditional manuals as a set of waking and sleep-based exercises intended to cultivate insight, perceptual flexibility, and altered self-referential processing. These practices include the intentional induction of lucid dreaming, in which individuals become aware that they are dreaming and may exert varying degrees of volitional influence over dream content. Advances in sleep physiology, polysomnography, wearable sleep monitoring, and methods for inducing and verifying lucid dreams now make it possible to examine such practices using objective neurophysiological measures. This randomized controlled trial evaluates the effects of a Dream-Yoga-inspired intervention compared with an active control condition in healthy adults without prior contemplative training. The intervention adapts core elements of traditional Dream Yoga into a standardized, secular program designed for accessibility and scalability. The study focuses on characterizing sleep and waking neurophysiological features associated with participation in the intervention and assessing changes in lucid dreaming, cognitive, and perceptual measures. Anxiety is assessed as an exploratory outcome. Study Design and Procedures Participants are randomly assigned to either a Dream-Yoga-inspired intervention or a structurally matched active control condition. All participants complete baseline ("pre") and post-intervention ("post") assessments separated by an eight-week intervention period. Baseline procedures include informed consent, demographic questionnaires, neuropsychological testing, and self-report measures. Participants receive standardized training in the use of home sleep monitoring devices and study procedures. Throughout the four-week intervention, participants attend weekly virtual group sessions of approximately 35 mins each, led by trained facilitators. Both study arms are matched for contact time, group interaction, facilitator attention, and homework expectations. Participants complete daily brief self-report measures related to sleep and dreaming during the intervention period. A subset of participants undergoes additional laboratory-based electrophysiological assessments, including overnight polysomnography and waking electroencephalography, at baseline and following the intervention. These recordings are used to examine sleep architecture and EEG microstructure, including exploratory analyses of oscillatory activity and functional relationships between brain regions. Participants not included in laboratory recordings provide sleep-related data using wearable devices, which offer longitudinal but lower-resolution physiological measures. Dream-Yoga-Inspired Intervention The intervention introduces participants to structured waking and sleep-based mental practices derived from Dream Yoga, adapted for individuals without prior experience. Waking practices emphasize attention regulation, imagery, metacognitive awareness, and intention-setting prior to sleep. Sleep-based components include instruction on recognizing dream states, cultivating lucidity, and engaging in specific cognitive exercises during dreams. Participants use wearable sleep devices that deliver auditory cues during REM sleep to support lucid dreaming and remind participants of intended dream-based practices. Participants are instructed in established signaling methods to indicate lucidity during sleep using predefined eye-movement patterns. The intervention integrates both waking and sleep-based exercises and includes individualized check-ins to support adherence to assigned practices. The intervention also incorporates two group-based virtual reality (VR) sessions delivered early in the study period. These sessions are designed to engage perceptual flexibility and self-referential processing through immersive, interactive experiences. The VR component serves as an adjunct to waking Dream-Yoga-inspired practices and is intended to reinforce experiential learning relevant to the intervention's goals. Active Control Condition The control condition consists of a modified Health Enhancement Program (HEP) adapted to match the intervention in duration, format, and participant engagement. The program includes education and experiential activities related to health-promoting behaviors with a particular focus on sleep and dreaming such as physical activity, nutrition, sleep habits, stress management, and expressive activities. VR sessions in the control condition focus on general health and well-being topics rather than contemplative or dream-related content. Home practice is encouraged, and adherence is supported through individual check-ins, mirroring the intervention arm. Randomization and Blinding Randomization is performed by a statistician not involved in recruitment or assessment. Outcome assessors and investigators involved in data analysis are blinded to group assignment. Facilitators deliver only one intervention type to minimize cross-condition contamination. Sample Size and Statistical Approach Participants are enrolled and randomized equally between groups. Primary analyses examine changes in sleep and waking neurophysiological measures from baseline to post-intervention between groups using mixed-effects models. Secondary analyses examine changes in cognitive measures. Exploratory analyses assess changes in additional self-report measures, including sleep-related experiences, lucid dreaming characteristics, and anxiety.